A continuous VOC removal device for polymer dispersion
A dispersion and polymer technology, which is applied in separation methods, gas treatment, and dispersed particle separation, can solve problems such as lowering production efficiency, increasing cleaning burden, and clogging of sieve plates, so as to improve production efficiency, avoid foaming, and continuously The effect of feeding
Active Publication Date: 2021-09-07
WANHUA CHEM GRP CO LTD +1
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
There is a multi-layer sieve plate structure in the tower of the device, which is suitable for continuous production of a single type of product. Frequent product switching will easily cause skinning in the tower and blockage of the sieve plate, which will increase the cleaning burden and reduce production efficiency.
Method used
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Embodiment 1
[0054] The polyurethane aqueous dispersion enters the gas-assisted atomizing nozzle 2 through the dispersion channel 6, the gas enters the gas-assisted atomizing nozzle 2 through the gas channel 7, and the dispersion and the gas pass through the polymer dispersion injection port at the gas-assisted atomizing nozzle 2 respectively 8-1 and gas injection port 8-2 are sprayed out, and the spray velocity of the dispersion is 3.8m / s, forming atomized steam and entering the upper part 1-1 of the tube device, where the atomized steam flashes, and the upper part of the tube device is externally connected to Vacuum exhaust gas collection system 3, VOC components enter the vacuum exhaust gas collection system 3 along with the atomized steam, the effective components of the dispersion enter the lower part 1-2 of the tubular device under the action of gravity, and the lower part of the tubular structure is connected to the discharge port 5.
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Abstract
The invention discloses a continuous VOC removal device for polymer dispersions. The main body of the device includes a tube structure, the top of the tube is connected to a vacuum exhaust system, the bottom of the tube is an expanded tube structure, and is connected to a discharge port. Gas-assisted atomizing nozzles are arranged obliquely downward; the dispersion is mixed with a certain proportion of gas, sprayed obliquely downward into the device through the nozzle, and the dispersion components enter the lower expansion structure under the action of gravity and are discharged in time. The VOC components enter the exhaust system with the atomized steam to achieve the purpose of removing the VOC components in the dispersion. The device of the invention has a simple structure, can be produced continuously, and can realize continuous and high-efficiency VOC removal of the polymer dispersion.
Description
technical field [0001] The invention relates to the field of polymer separation and treatment devices, in particular to a continuous VOC removal device for polymer dispersion. Background technique [0002] In recent years, low-carbon environmental protection and sustainable development have become hot topics in the society. Industrial production has gradually begun to pay attention to the development and application of water-based coatings. As the basic material for the production of water-based coatings, polymer dispersions have gained rapid development in recent years. development of. [0003] Existing polymer dispersions generally contain more volatile organic compounds (VOC), which do not meet the requirements of environmental protection and are not conducive to human health. The total amount of VOC in the dispersion can be greatly reduced through raw material control and synthesis process optimization, but there are still many VOC components (500-2000ppm). In order to...
Claims
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IPC IPC(8): B01D53/18
CPCB01D53/18B01D2257/708Y02A50/20
Inventor 马磊贾元峰杨建强乔义涛孙家宽
Owner WANHUA CHEM GRP CO LTD